baber/WOPTO huggingface dataset:
Patent GB-1175760-A (GB)
Title: Colloidal Silica Foams
IPC: C08J9/30
Filed: 1967-12-21
Abstract: 1,175,760. Silica foam. E.I. DU PONT DE NEMOURS & CO. 21 Dec., 1967 [22 Dec., 1966; 17 Oct., 1967], No. 58100/67. Heading C1A. An aqueous foam comprises 60% by weight of colloidal silica based on the weight of water + silica, and a nitrogen-onium compound or amine containing 1 or 2 alkyl chains of at least 8 carbon atoms. A preferred range is 4-50% by weight of colloidal silica and the foam may contain 0À01-5 mol. per cent of the onium compound or amine based on the silica content. Preferably, the onium compound has 10-50 carbon atoms and contains 1 or 2 alkyl chains of 10-20 carbon atoms. The amine used may have 10-40 carbon atoms and contain 1 or 2 alkyl chains of 10-20 carbon atoms. The onium compound or amine may be a substituted amine or an ammonium, imonium, hydroxyl ammonium, diazonium, hydrazonium, or guadonium compound and the compound or the amine used is preferably substituted by a straight or branched chain aliphatic group of 1-24 carbon atoms, or by a cyclo-alkyl, aryl or alkyl substituted aryl group. Large numbers of amines and onium compounds are listed in the Specification, a preference being expressed for cetyl-trimethyl-ammonium chloride. The silica sol used is preferably stabilized by the addition of sodium hydroxide. The colloidal silica preferably has an average particle size of at least 100 n.m., preferably 5-25 n.m. and most preferably 7-15 n.m. The foams are produced by mechanically agitating or submitting to other conventional foam-producing methods an aqueous mixture having the same composition as the final foam. The foam may incorporate a filler which may be particulate or fibrous, the filler being present in an amount of up to 1500% by weight based on the weight of the silica. Many examples of fillers are given in the Specification. The water may be removed from the aqueous foams of the invention by drying.
Patent GB-1409788-A (GB)
Title: Method of producing and utilizing heat energy and apparatus therefor
IPC: F02C3/36
Filed: 1972-12-15
Abstract: 1409788 Fluent fuel combustion apparatus PHILLIPS PETROLEUM CO 15 Dec 1972 [15 Dec 1971 27 March 1972] 58139/72 Heading F4B [Also in Division F1] To reduce formation of pollutants, particularly nitrogen oxides, in a combustion chamber 16, Fig. 1, primary, secondary and tertiary air (or other oxidant) is introduced into the latter as three distinct streams, the secondary air being preheated to a temperature at least 100 F. higher than that of the primary air, and the tertiary air being preheated by heat exchange at 24 with exhaust gases leaving a heat energy utilization device 22 supplied with combustion gases from chamber 16. Device 22 may be a turbine (25, Fig. 2, not shown) or a steam boiler. In one arrangement, Fig. 3, the combustion chamber is substantially the same as that shown in Fig. 1 of Application No. 58138 with the exception that preheated tertiary air from heat exchanger 24 is supplied through pipe 15 to the annular, finned, chamber 48<SP>1</SP> surrounding the primary combustion zone, where it is further heated before entering the combustion gases through openings 74. An annular baffle 68 closes the upstream end of chamber 48<SP>1</SP>. The secondary air is preheated in flowing through the annular space 64 outwardly of chamber 48<SP>1</SP> before entering the combustion gases through ducts 72 and openings 70. In a modification, Fig. 12, the secondary air is introduced through ducts 72<SP>1</SP> after being preheated in a separate heat exchanger or by mixture with some of the air flowing from heat exchanger 24 through pipe 15<SP>1</SP>. Valves may control the mixing. Temperatures and other operating conditions are specified.
Patent GB-1447657-A (GB)
Title: Valve sequence interlock system
IPC: E21B34/02
Filed: 1973-12-19
Abstract: 1447657 Wells &c F M C CORP 19 Dec 1973 [22 Jan 1973] 58940/73 Heading E1F A valve sequence interlock system for use in an offshore well platform (Fig. 1 not shown) to control a plurality of safety valves (22, 24, 26) installed in series in a well conduit, comprises first and second control valves 46 and 44 for controlling flow of pressure fluid to first and second fluid-actable safety valves (26 and 24), respectively, locking means 62 actuable to prevent operation of the second control valve 44, and control means 76, 74 for actuating the locking means when the first control valve 46 is in a first predetermined position, and de-actuating the locking means when the first control valve is in a second predetermined position (as shown). In the exemplified case where a downhole valve (22), a subsea valve (24) and a surface valve (26) are provided, the interlock system ensures that neither the downhole valve nor the subsea valve is opened or closed unless the surface valve is closed. This ensures that erosive forces of fluid flow through the safety valves (22, 24, 26) are restricted as much as possible to the surface valve (26) which is the easiest to service or replace. Control valves 42 and 44 of the downhole and subsea valves are locked in either the safetyvalve open or closed position by means of pneumatically-operated cylinders 60, 62 having piston rods 60a, 62a engaging in dimples 64, 66, 68 and 70 in the control-valve operating handles. The piston rods are spring-biased into the retracted position, and are urged into engagement with respective dimples when the control valve 46 is opened to supply pneumatic fluid via a line 52b to the surface safety valve (26) to open the same. The subsea and downhole valves are hydraulically operated and are each provided with their own pressurised source. All the safety valves are of the fail-close type.
Patent GB-1395330-A (GB)
Title: Enzymic detergent compositions
IPC: C11D3/386
Filed: 1971-12-21
Abstract: 1395330 Detergents containing enzymes UNILEVER Ltd 20 Dec 1972 [21 Dec 1971] 59296/71 Heading C5D [Also in Division C3] Amylolytic-enzyme-containing granules with improved storage ability contain an imino acid or a mixture of amino acids as stabilizer therefor. The enzymes may be of vegetable or animal origin or may be produced by microorganisms, e.g. B. subtilis. The amino acids are preferably α-amino acids such as glycine, alanine, valine, leucine, isoleucine, phenylalanine, tyrosine, proline, hydroxyproline, serine, threonine, cysteine, cystine, methionine, thrytophane, aspartic acid, glutamic acid, arginine, lysine, histidine and ornithine; also mixtures produced by the hydrolysis of proteins. The granules may be prepared by binding the enzyme and amino acid to (A) a hydratable carrier such as sodium tripolyphosphate using an aqueous slurry of the enzyme and amino acid as in Specification 1,151,748 or (B) a carrier using a liquid or liquefied nonionic surfactant as conglutination agent. The enzyme and amino acid may be in the form of an intimate mixture obtained by precipitation from, absorption from, evaporation of, or spray drying of, a mother liquor containing said components. The amylolyticenzyme-containing granules may be incorporated in detergent compositions containing organic surfactants and water-soluble inorganic and/or organic builder salts.
Patent GB-1317079-A (GB)
Title: Character generating cathode ray tube device
IPC: H01J29/46
Filed: 1971-12-29
Abstract: 1317079 Cathode-ray tubes MATSUSHITA ELECTRONICS CORP 29 Dec 1971 [29 Dec 1970] 60334/71 Heading H1D [Also in Division H4] In a monoscope for generating a video signal by scanning the electron beam over a selected character in a stencil electrode: 5, Fig. 5, a signal from the stencil electrode forms one input to a differential amplifier 10 the other input of which is the sum of the signals derived from a collector plate 6 and a secondary-electron collector electrode 11. The electrodes 5 and 6 should have a high secondary emission ratio and the potential sources shown should satisfy the condition V sc >V s >V pc >0. The signals at points A and C are then in phase, and in anti-phase to that at point B (Fig. 6, not shown) so that the signals may be combined as illustrated to increase the output signal. In a modification, Fig. 7 (not shown), the electrode 11 is omitted, secondary electrons being collected by the anode 4 which is connected to earth through a load resistance from which an output signal is taken.
Patent GB-1339715-A (GB)
Title: Process involving electrical latent image erasure
IPC: G03G15/05
Filed: 1970-12-21
Abstract: 1339715 Electrographic process XEROX CORP 21 Dec 1970 [2 Jan 1970] 60551/70 Heading G2H A latent electrical image of a first polarity on a migration imaging member comprising migration material on and/or in a layer of softenable material (cf. Specification 1152365) is at least partially erased by electrically charging the member (e.g. by (a) applying an electric charge of polarity opposite to the first polarity, or (b) applying an AC corona charge), so that the surface potential is reduced to about zero or is reversed, and then another latent electrical image is formed on the member. The second latent image may be developed as in Specification 1152365, or erased so that the imaging member can be reused. The imaging member may be uniformly exposed before step (a) or (b), and /or the imaging member may be softened for a few seconds after step (a) or (b).
Patent GB-1330357-A (GB)
Title: Magnetic reed contact units
IPC: H01H19/20
Filed: 1970-12-31
Abstract: 1330357 Contact units for switches M MARTELLI 31 Dec 1970 [9 Jan 1970] 61921/70 Heading H1N The ferromagnetic reeds of a sealed magnetic reed contact unit are provided with co-operating non-magnetic contact buttons 37, 39 or 53, 57 mounted on surfaces of the ferromagnetic reed which when the buttons are in engagement are further apart than other faces of the reeds. Fig. 7 shows such an arrangement with one of buttons 37 in a recess 35A in the reed 35 so that the minimum air gaps are at I1, I2. Both reeds may be recessed to accommodate respective buttons in narrow necked recesses (Fig. 8, not shown) and the surfaces of the reeds in the minimum air gaps may be inclined with respect to the plane lying tangential to the buttons at their point of contact (Fig. 9). This contact arrangement can be incorporated in units such as that of Fig. 2 with ferromagnetic members 13, 15 or resilient members 13E, 15E or arrangements where and/or the ferromagnetic members 23, 25 (Fig. 5) are mounted on resilient members 23E, 25E mounted at the same end of the contact unit.
Patent GB-681100-A (GB)
Abstract: 681,100. Grates. BROOMSIDE FOUNDRY (1922), Ltd., and AULD, A. B. Feb. 12, 1951 (Sept. 21, 1949], No. 24240/49. Class 126 A front for a domestic fireplace has an airregulating damper hinged about a horizontal axis at its upper part to swing open towards the back, and arranged to seat at the back of the front at an upward and forward inclination to vertical so that it tends to close by gravity and means operable from the exterior to open the damper to a predetermined extent. The front has an upper part which slopes downwardly and forwardly and a lower part, sloping downwardly and backwardly, provided with a rectangular ashpit opening closed by a removable ash-pit door 11. The rear face of the ashpit door has a machined surface fitting against a machined seat surrounding the ash-pit opening. A rectangular air-opening in the ash door 11, with a control boss 15, is closed by a damper 17 carried by hinge-pins projecting at either side of the upper edge and engaging hinge sockets 16 provided'on the ash pit door. A lug 22 on the spindle of the operating handle engages a cam surface 20 subtending approximately 180 degrees on either side of a central opening in the damper. A coil spring 23 is provided on the operating spindle to prevent play of the handle during operation. In the closed position, Fig. 3, the lug 22 is clear of the cam surface. A gas burner 24 may be provided.
Patent GB-769701-A (GB)
Abstract: 769,701. Plate rectifiers. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., PETER, L. H., and WALKER, A. H. B. Feb. 14, 1955 [March 17, 1954], No. 7808/54. Class 37. A dry plate rectifier assembly comprises an inner body 2 with three apertures containing two pairs of copper oxide rectifiers 31, 32 and 33, 34 and a selenium surge-absorbing rectifier element 35 respectively, the body being enclosed in an insulating case 1 with cover 3. A first pair of connectors 27 and 28 respectively connect the opposite ends of the three stacks to leads 42 and 43, and connectors 29 and 30 with tags 40 and 41 are connected between each pair of rectifiers 31, 32 and 33, 34. The contacts are urged into engagement by springs 37, 38 and 39. The arrangement provides a bridge rectifier suitable for incorporating in an alternating current measuring instrument, and includes a surge suppressor connected between the D.C. terminals of the bridge. Alternatively, the surge suppressor element 35 may comprise two rectifiers connected back to back, and be connected across the A.C. terminals of the bridge. The device may be filled with synthetic plastic material, and the elements retained in position by a central bolt. Specification 551,443, [Group XXXV], is referred to.
Patent GB-2001934-A (GB)
Title: Lined packaging container
IPC: B65D5/60
Filed: 1978-06-22
Abstract: A packaging container which can be liquid tight or hermetically sealed is formed from a flat blank comprising an outer member (1) which can be formed into a tubular body with closure flaps at each end and a filling and dispensing aperture (17), and a flexible membrane (2) fixed to the inside of the outer member along a continuous peripheral seal line (19). The membrane covers at least 50% of the body portion of the outer member in the widthwise direction and extends over uninterrupted flap portions adjacent the covered body portion and over the filling and dispensing aperture (17) so that after erection in conventional manner filling causes the membrane to move away from the body portion covered in the flat blank. <IMAGE>
Patent GB-2011147-A (GB)
Title: Tape recorders
IPC: G11B15/093
Filed: 1978-09-20
Abstract: For sensing and providing warning of the end of the tape in a tape recorder, the supply reel shaft 8 is mounted on a pivotable arm 10 arranged so that the arm is rotated against the bias of a spring 16 at the end of a tape due to the increased tape tension which occurs at this time. The arm 10 actuates an electric switch 12 which energises an audible alarm (not shown). <IMAGE>
Patent GB-2024588-A (GB)
Title: Protective enclosure
IPC: E04H15/22
Filed: 1978-09-25
Abstract: An inflatable enclosure (10) has an entry part (14) communicating with an air cooled blower (22) combined with a heater/humidifier (24). A duct (26) leading from the blower (22) includes baffles to introduce turbulence into the airstream. The enclosure length is determined by the number of intermediate parts (16) and (18) which are secured together and at one end to the entry part (14) and at the other end to an exit part (20). Joints between the different parts are provided by zip fasteners (48) with secondary fastening flaps (52, 54) overlying the zipped joints and laced together. Air locks are provided by means of removable zipper fastened panels at opposite ends to allow entry and exit of large items without complete loss of pressure. Material for the parts is UV inhibited polyethylene sheet, polypropylene sheet (normal and UV inhibited). Adjustable air vents (28), (30), (32) allow a balance between throughflow of air and internal pressure to be obtained. <IMAGE>
Patent GB-2030441-A (GB)
Title: Process for treating meals and flours of oily seeds
IPC: A23L11/30
Filed: 1978-11-02
Abstract: A process for treating meals or flours of oily seeds comprises treating a meal or flour with ammonia or ammonium hydroxide and one or more organic solvent(s> R1-(CnH2n)-OR2 (I> in which either  R1 and R2 each represent hydrogen and n is 1, 2 or 3,  or  R1 represents hydroxy, R2 represents hydrogen, methyl or ethyl.,  and n is 2 or 3; wherein the organic solvent(s) is/are added to the meal or flour first or at the same time as the ammonia or ammonium hydroxide and an optional subsequent treatment with water which treatments give rise to meals and flour suitable for use in or as fodder and foodstuff additives.
Patent GB-2033631-A (GB)
Title: Digital-analog converter
IPC: H03M1/00
Filed: 1978-11-09
Abstract: A digital-analog converter comprises a resistive ladder D/A converter 1,a switch unit 3 and a Fibonacci p-code devolution unit 4. The p-code devolution unit 7 includes n stages equal in number to the digits 5 of the p-code being converted. Each such stage comprises an OR gate 10 and a flip-flop 8 whose set output 9 is used as a digit position of a multidigit output of the p-code devolution unit, a first input of the OR gate being used as a digit position of a multidigit data input 5 of the digital-analog converter. Some stages also include an AND gate 12 whose output is coupled to the reset input of flip-flop 8, inputs of all the AND gates being coupled to a control input 6 of the p-code devolution unit. The invention is suitable for use with digital measurement apparatus. A functional test procedure is available. <IMAGE>
Patent GB-2008982-A (GB)
Title: An Improvement in or Relating to Water Spray Nozzles for Use in Coal Mines
IPC: B05B1/34
Filed: 1978-11-27
Abstract: A water spray nozzle in the form of a headed screwthreaded plug having at an end remote from the head a flat surface 16 normal to which is a water feed duct 18 breaking into a central cavity 20 in a tangential manner to promote a swirling action so that water which issues from an axial delivery passage 22 communicating with the cavity 20 does so in a hollow cone shape. <IMAGE>
Patent GB-2012630-A (GB)
Title: Arrangement for changing toolholders in a machine tool
IPC: B23Q3/155
Filed: 1978-12-20
Abstract: The invention provides an arrangement for changing toolholders, and hence tools, in a lathe having a work spindle (24), and a slide unit (28) to be equipped with at least one toolholder, the slide unit having at least one slide (30) movable parallel to the longitudinal axis of the work spindle. The arrangement includes a rotary magazine (46) for receiving a plurality of carriers (48) each having at least one mounting for a toolholder or tool. A hydraulic actuator 106 is provided to displace a selected carrier between a transfer position of the magazine and a clamping position (68) of the slide unit. Thus, the selected carrier, carrying a tool, can be moved from the magazine and clamped to the slide unit whereby the tool can be used to perform forming operations on a workpiece. Thereafter, the carrier can be returned to the magazine. <IMAGE>
Patent GB-2014720-A (GB)
Title: Air conditioning systems
IPC: F24F1/00
Filed: 1979-01-03
Abstract: An air conditioning system for a room comprises apparatus comprising   (a) an inlet (1) and an outlet (11) communicating with the external atmosphere and an entry (8) and an exit (9) communicating with the room (in both cases when the system is installed); (b) a fan (3) or other means for producing in a first mode an inward current of air from the inlet to the entry and an outward current of air from the exit to the outlet, and in a second mode an internal current of air from the exit to the entry; (c) first heat transfer means such as a thermal wheel (12) operable in the first mode to transfer heat between the outward and inward currents; and (d) second heat transfer means, preferably a heat pump 4, operable in both modes to heat or to cool the inward current or the internal current as the case may be.   <IMAGE>
Patent GB-2018625-A (GB)
Title: Electrostatic powder spray gun
IPC: B05B5/03
Filed: 1979-04-17
Abstract: An electrostatic powder spray gun includes an electrically insulated gun barrel (10) a grounded inner electrode (24) in a powder conduit (13) and an impact unit (16) which is mounted on a rod (17) that projects into the powder conduit (13). The supporting rod (17) and the impact unit (16) form an electrode for charging the powder and the impact unit (16), supporting rod (17) and inner electrode (24) consist of a material which is electrically semi-conductive and which is able to inhibit sintering and deposit of powder thereon. The material may be polytetrafluoroethylene with embedded graphite particles. <IMAGE>
Patent GB-2019289-A (GB)
Title: Method of producing clad materials
IPC: H02G5/00
Filed: 1979-04-18
Abstract: In the method solder is deposited on at least one surface of a base metal e.g. of copper at least one copper net and at least one stainless steel net are placed e.g. tack spot-welded on a side of a corrosion resistant metal plate to form a laminate and the lamination surface of the laminate is welded to a soldered surface of the base metal. The corrosion resistant plate can be of titanium, tantalum, niobium or zirconium. Welding is performed under pressure preferably by a seam-welder. The method is applied to manufacture of busbars, electrode bodies and vacuum or pressure tanks.
Patent GB-2027953-A (GB)
Title: Setting a solid state watch
IPC: G04G5/00
Filed: 1979-04-24
Abstract: A rotate switch mechanism for actuating time correction displayed by an electronic timepiece comprising a rotatable crown and stem, a toothed wheel rotatably connected to the stem and a switch assembly. The switch assembly contains a switch blade precisely positioned within the periphery of the teeth of the toothed wheel and deflected thereby, with rotation of the crown, to make contact with either of two switch contacts. Circuitry responsive to each switch closure is provided for incrementally effecting time correction, forward and backward, with clockwise and counterclockwise rotation of the crown, respectively.
Patent GB-2060366-A (GB)
Title: Upholstery buttons
IPC: B68G7/08
Filed: 1979-09-14
Abstract: An upholstery button 20 comprises a dished button back 10, in the centre of which is a hole 11 through which a tape head 12 is inserted and from which the tape 13 extends. The button back has an outwardly projecting flange 17 at its periphery. The flange is flat and co-planar with the top of the button back. A conventional cap 19 having an inwardly projecting flange 21 at its rim fits over the flange 17 at the periphery of the dished back 10 of the button 20. A fabric covering 18 covers the cap and i trapped between the mating flanges of the button back and cap. The button back can be made by a single pressing operation from a strip of material, for example steel, slightly larger than the diameter of the button back. <IMAGE>
Patent GB-2034102-A (GB)
Title: Flat cable
IPC: H05K1/11
Filed: 1979-09-26
Abstract: A cable harness (10) is originally fabricated in a serpentine pattern and a extendable into an elongated linear length. The harness (10) comprises a plurality of conductors (16) formed one or both sides (Fig. 6 not shown) of an insulative substrate (12) by using conventional photolithographic techniques. The serpentine pattern on the harness forms one or more U- shape sections (28) each comprising two leg portions (30) integral with an end portion (32). The cable harness (10) may be rendered generally linear by means of two sets of folds. One set of folds is defined by line 34 the other set of folds is defined by line 36, 38 or 44, 46. The second set of folds may be made in leg portions (30) or in the end portions (32). Another method of folding the harness is given (Figs. 3 and 5a to 5c not shown). On some embodiments (Figs. 6 and 7 not shown) separated sets of folds render a 90 DEG  bend linear. <IMAGE>